US2003161736A1PendingUtilityA1

Pump device unifying a reservoir and method for attaching the reservoir to the pump device

38
Assignee: TOYODA MACHINE WORKS LTDPriority: Feb 27, 2002Filed: Feb 27, 2003Published: Aug 28, 2003
Est. expiryFeb 27, 2022(expired)· nominal 20-yr term from priority
Inventors:Hirokazu Kondo
F04C 2/344F01C 21/10F04C 2240/805F04C 11/00
38
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A pump device unifying a reservoir is disclosed. The pump device comprises a pump housing, a bracket, bolts and nuts. The pump housing comprises a front and a rear housing. The bracket is attached to the reservoir at one end thereof. The bolt has a bolt head at an intermediate portion thereof, a first thread portion formed on one side thereof and a second thread portion formed on the other side thereof, which a diameter of the first thread portion is larger than the same of the second thread portion. The nut engages to the second thread portion. The rear housing is secured to the front housing by screwing the first thread portion to the front housing through the rear housing. The nut is screwed to the second thread portion so that the other end of the bracket is fixed between the bolt head and the nut.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A pump device unifying a reservoir comprising: 
 a pump housing;    a bracket attached to the reservoir:    a bolt having a bolt head at an intermediate portion thereof, and formed a first thread portion on one side thereof and a second thread portion on the other side thereof, wherein the first thread portion is screwed into the pump housing; and    a nut screwed to the second thread portion so as to fix the bracket with the bolt head.    
     
     
         2 . A pump device unifying a reservoir according to  claim 1 , wherein: 
 the bracket has a U-shape slot which the second thread portion goes through.    
     
     
         3 . A pump device unifying a reservoir according to  claim 1 , wherein: 
 the bracket has a through hole which the second thread portion goes through.    
     
     
         4 . A pump device unifying a reservoir according to  claim 1 , wherein: 
 a diameter of the first thread portion is larger than a diameter of the second thread portion.    
     
     
         5 . A pump device unifying a reservoir according to  claim 1 , wherein: 
 a length of the first thread portion is longer than a length of the second thread portion.    
     
     
         6 . A method for attaching a reservoir to a pump device, comprising: 
 preparing a bolt which has a bolt head at an intermediate portion thereof, a first thread portion formed on one side thereof and a second thread portion formed on the other side thereof;    preparing a bracket which is attached to the reservoir at one end thereof;    preparing a nut which engages to the second thread portion;    securing the bolt to the pump device so as to screw the first thread portion; and    screwing the nut to the second thread portion so that the other end of the bracket is fixed between the bolt head and the nut.    
     
     
         7 . A method for attaching a reservoir to a pump device according to  claim 6 , wherein: 
 the pump device comprises a front housing and a rear housing; and    the rear housing is secured to the front housing by screwing the first thread portion to the front housing through the rear housing.    
     
     
         8 . A method for attaching a reservoir to a pump device according to  claim 7 , wherein: 
 a performance inspection of the pump device is executed after the rear housing is secured to the front housing and before the bracket is fixed.

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